subject: GSM Listening Device High Sensitive Surveillance Bug [print this page] This product has the frequency of 900, 1800, 1900 and limited power is 24 hours that too non stop, the range of microphone is 5 7 (radius) in meters and the responding frequency is 1.2K~800 KHz, and the sensitivity is -+10k, the temperature should be -40~50'C and after seven day the stand-by time starts, it has very few accessories like 1 SM SIM audio Surveillance Device, 1 charger, 1 USB cable but the work of this device so helpful. Presently the price of this device is $ 19.79 and of course it is not so expensive but the work is remarkable.
GSM Listening Device High Sensitive Surveillance Bug
